Safety device for elevators.



A. J. ROSELL. SAFETY DEVICE FOR ELEVATORS.

APPLICATION FLLED FEB. 4| I915.

SSS:

PdtentedFeb. 8,1916.

2 SHEETSSHEET 1 Pi... A

- IIVI/E/VTOR I Axe lJ RoseH I ,4 TTORNEYS THE COLUMBIA PLIu IOaRAPH :0"WASHINGTON, n, c.

A. J. ROSELL.

SAFETY DEVICE FOR ELEVATORS.

APPLICATION FILED FEB, 4, I915- Pate med Feb. 8,1916.

2 SHEETS-SHEET 2.

Ill

IIVI/ENTOR A'xelJ Rosell A TTOR/VEYS THE COLUMBIA PLANOGRAPH (10.,WASHINGTON, D. c.

- lock on the cage reaching a landing with ya AXEL J. Bosnian; orNEWYORK, 1v.

'SAFE'IY DEVICE roanrnvnrons;

To all whom/ it may concern V Be it known that I, AXEL J. RosELL, ac1t1-. zen of the United States, and a resident of the city of New York,borough of Brooklyn,-

in the county of Kings and State of New York, hav'einvented' a new andImproved Safety Device for Elevators, of which the following is a full,clear, and exact description.

The object of'the invention is to provide anew and, improved safetydevice for elevators arranged to prevent accidental opening of a shaftdoor unless the cage has reached and stopped at a landing, and to lockthe controller in thecage against being actuated while the cage is atalanding unless the door for this landing is first in Closed position. I

' In order toproduce thedesired: result use is made of a lock fornormallyholding the; door aga nst opening, and; an actuatingmechanism'mountedin the cage and having an operating member connectedwith the controller in the cage, the said operating.

member being adaptedto engage the said i view to unlocking the door toallow the oper l to lock the said controller against move-v isrepresented in the accompanying draw-j ings forming a part of th sspecification, 1n

ator to move the door into openor closed .position, the said actuatingmechanism also having a locking member controlled bythe door on openingand closing the same and adapted ment as long as the door is open and tounlock the controller as soon as the door/is closed.

A practical embodiment ofthe invention which similar characters ofreference indi cate. corresponding parts in all the views.

Figure 1 is a sectional side elevation of the Safety device asappliedand showing the cage in position at a landing, the door of whichis shown. inclosed position; Fig.2 is an inverted sectional plan view ofthe same on the line 2'2 of Fig. 1; Fig. 3 is a cross section of thesame on the line 33 of Fig.

-2; Fig. 4: is an inverted plan view ofthe safety device, similar toFig. 2, and showing the partsin a different position; Fig. 5 is asectional side elevation of the safetydevice as applied and showing theparts in position after the cage has left the landing; Fig. 6 is aninverted sectional plan view of the sameon the line 66 of Fig. 5; andFig. 7

. is. a Pe pe tiv iew of hespr gmtshy Specification of Letters Batent. p'i- 'Patg fl ed Feb, 8, 1916, Application filed. February 1915; Serial115.6,044. I 7

In thelelevator shaft A ismounted to as-I I cend and descend in theusual manner a cage '13 provided with a suitable controller C forcontrolling the up. and down movement of the cage. "A door D. leadstothe shaft A at each landing E, and this door is provided at its lowerend with a, vertically 1 disposed locking arm F, normally abuttingaaginst a lug G'- of a spring catch G extending horizontally andsecuredto the inside of the: shaft A atthe'landing El Normally the door-Dislocked against opening by a look} ing bar F'abutting against the lugGof the springcatchG V f M f On the under side of the cagefBfis' arranged a slide H provided with elongated bracketl attached to theunderside of the cage 13, The pivot I ispivotally connected by aconnecting-link J with an, arm C on thej lever (1 10f the controller Csothat when; l v

the said lever C? is" actuated by the attend-f ant charge of thefcage Bthen a movement is given to the slide Hto move thea oward orfrom the;side of the shaft H containing th d 1 i p v The-s1ide H is provided witha sliding arm K pressedon by a spring K and carryingazfrictionrollerKadapted to engage;

the free end of the. spring catch G to imove V the latter,i'ntdunlockirig position, thatis,

tomove thelugl G .out of the path of the locking barlF to permitvopening ofthe' door D. Onthe 'slide H'isfulcrumed at L- a ;lever Lterminating in a .fork L adapted to engage the lockingbar F atjthetime.the

cage B reaches a landing E and the slide ismoved outward so. that. the.door -on being opened imparts a swinging motionfto the lever L to swingth same; fr its l mal position shown in Fig. -.2 into the-lockingposition illustrated inFig. 4. The rear end of the lever L provided witha lug L? adapted to engage a notch J formed in the connecting link J tolock the controller lever C against movement, that is, at the time whenthe lever C is in vertical position and the-cageB isat, a standstill(see Fig. 1).

cage B is ascending or descending then the controller lever C is eitherin the position shown in full lines in Fig. 5 or in dotted lines asindicated in said figure. When the controller lever C is in thisposition then the slide H is in Withdrawn position so that the fork L fthe lever L and the friction roller K extend within the area of thebottom of the cage 13 and consequently do not interfere with theascending and descending of the cage B. VJ hen the cage B reaches alanding and the attendant moves the lever G into vertical stoppingposition then the connecting link J straightens out the links I, I sothat an outwardly sliding movment is given to the slide H whereby thefork L is engaged with the locking bar F and the friction roller K isengaged with the free end of the spring catch G to move the lug G out ofthe path of the locking bar F. l Vhen the elevator comes to a stop thedoor D can be opened by the attendant in the cage and the door in itsopening movement causes the locking bar F to impart a swinging motion tothe lever L by the looking bar id engaging one of the prongs of the forkL The swinging motion given to the lever L causes its lug L to enter thenotch J so that the controller C is locked against movement during thetimethe door D is in an open position. When the door '1) is closed thelocking bar F reengages the fork L and imparts a return swinging motionto the leverL so that the lug L thereof moves out of the notch d atthetime the door D is in closed position. When this takes place thecontroller C can be manipulated by the attendant for starting the carandin doing so the slide H is Withdrawn to move the friction roller Kout of engagement with the spring catch G whereby the latter returns tonormal locking position thus preventing the door D from being opened onaccount of the lugG' projecting into the path of the looking bar'F Fromthe foregoing it will be seen that the locking'bar F and the springcatch G are on thedoorand elevator shaft respectively, while theremaining' member of the safety device are located on the cage.

In case the operator stops the cage intermediate of two landings theprojected roller K and the fork L are not liable to interfere with anyprojection in the shaft, as the spring K allows the arm K carrying theroller'K to yield. i

Having thus described my invention, I claim as new and desire to secureby Letters at t: c

1. An elevator shaft having a door pro vided with a lock to normallyhold the door against opening in combination with a cage adapted toascend and descend in the said shaft, a controller in the said cage and"an actuating mechanism mounted on the said cage and having a notchedmember connected with the controller, and an operating member connectedwith the notched memher and adapted to engage the said lock on the cagereaching a landing, to unlock the the door to allow of moving the doorinto open or closed position, the said actuating mechanism having alocking member controlled by the door on opening and closing the sameand adapted to engage the said notched member to lock the saidcontroller as long as the door is open and to disengage the notchedmember to unlock the controller as soon as the door is closed.

' An elevator shaft having a sliding door provided with a locking bar,and a spring catch held on the shaft and adapted to normally engage thesaid locking bar to hold the door against opening in combination with acage adapted to ascend and descend in the said elevator shaft, acontroller in the cage and actuating mechanism mounted on the cage andconnected with the said controller to unlock the door and to lock thecontroller, the said actuating mechanism having a link connected withthe controller, an operating member connected with the said link andadapted to engage the said catch to move the latter into unlocking position relative to the locking bar to allow of opening or closing the doorat the time the cage reaches a landing and the said actuating mechanismhaving a fulcriuned looking member controlled by the said locking barand adapted to engage and disengage the said link, lock the controlleragainst movement as long as the door is opened and to unlock thecontroller as soon as the door is closed.

"8. An elevator shaft having a sliding door provided with a centrallydisposed locking bar and a spring catch held on the shaft and normallyengaging the said locking bar to hold the door against opening, combinedwith a cage adapted to ascend and descend in the said shaft, acontroller in the said cage, a slide mounted on the cage and connectedwith the said controller, the said slide having a spring pressed slidingmember adapted to engage the said spring catch and move the same intounlocking position relative to the locking bar, and a locking lever'fulcrumed on the said slide and having at one end a fork adapted toengage the said locking bar and to receive a swinging motion on movingthe door into open or closed position, the said locking lever having amember at the other end adapted to engage the said controller and lockthe same against movement during the time the (1001 is open;

' a. An elevator shaft having a sliding door provided with a verticallydisposed locking bar, and a spring catch held on the shaft andaermauy'en a ing the said locking bar said lockingbar and I otion onopening and ther end of the said apted to engage and k notch to lock and7 provided With a door nally lock the door I bination with a cagedescend in the said he said cagevhaving ed on'the cage and :dsliding armproigaging the said look a landingto unlock .oving the same into i, alocking member slide and controlled and closing the same, the controllerlever, he said link With the a :When the lever is king member beingdisengage the said zhe link and the con- E I have signed my n in thepresence of, 7

es. 1 :EL ROSELL.

:, mos.

)mmissioner of Patents.

to hold the dooragainst -opening, combined With a cage adapted to ascendand descend in the said shaft, a controller inthe said cage, a slidemounted on the cage and con- 'nected With the said controller, the saidslide being provided with a spring-operated friction roller adapted toengage the said spring catch and move the same into unlockmg positionrelative to the locking bar, and

provided Witha vertically disposed locking bar and a spring catch heldon the shaft and normally engaging the said locking bar to 7 hold thedoor against opening, combined 'ed to engage the said spring catch, apair of with a cage adapted to ascend and descend in the said shaft, acontroller in the said cage, a slide mounted on the cage andadaptconnected links of which one is fulcrumed on the cage and theother'is connected With the said slide, a connecting link connecting.

the said pair of, connected links With the controller, the saidconnecting link having a notch, and a locking lever fulcrumed on thesaid slide and having at one end a fork adapted to engage the to receivea swinging In closing thefdoor, the 0 locking lever being ad: disengagethe said lini unlock the controller.

I 6. An-elevator shaft having a lockto norI against opening, in comadapted to ascend and shaft, a controller in t a lever, a slide monnthaving a spring-presse vided With means for eI when the cage reaches thedoor to alloW of In open or closed position fulcrumed on the said by thedoor on opening a link connected With and means connecting tl slide tomove'the slid actuated, the-said locl adapted to engage and link to lockand unlock 1 trolling lever;

In testimony vvhereo:

name to this specif icatio ,two subscribing Witness A Witnesses:

THEO. G. Hos'rni PHILIP ROLLII Copies of this patent may be obtained forfive cents each, by addressing the Gr Washington, D. C. I V

